Cleary's 3336F Is it safe for all orchids?

[tucker85]

Silken, what kind of water do you use on your orchids? I accidentally discovered that orchids are susceptible to fungus when they don't get enough calcium and magnesium. Cal/mag are usually in municipal water supplies but if you use rain water or RO water, it would be important to use a fertilizer with cal/mag in it or a cal/mag supplement. Here's an article about the need for calcium in orchids.
http://www.staugorchidsociety.org/PD...ps-Calcium.pdf